The AirTAC GR40015C3TK AirTAC Air Regulator 1/2" NPT with Gauge is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 psi) with PT1/2" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The GR40015C3TK is an AirTAC GR-series air pressure regulator for compressed air only. It reduces and holds a stable downstream pressure in the range 0.05-0.9 MPa (7-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi). This 400-size unit is fitted with 1/2 in NPT ports, an external round pressure gauge reading in bar, a built-in reverse (check) valve, and a mounting bracket; the GR body is also panel-mountable. Its operating temperature range is -20 to 70 C, wider than the rest of the G-series, and pressure loss through the valve is low.
This is a genuine AirTAC part. The GR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT (standard), G (BSPP) or NPT threads, gauge scales in MPa, psi or bar, an optional low-pressure type limited to 0.4 MPa, and bracket or no-bracket variants. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GR40015C3TK AirTAC Air Regulator 1/2" NPT with Gauge |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (NPT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure.
| This model | GR400 · PT1/2" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Fitted at a 1/2 in take-off from a factory compressed-air ring main, the regulator sets a stable working pressure for the tools and actuators served by that drop, with the bar gauge giving operators a direct reading at the station.
On a small pneumatic press or clamping fixture, the regulator holds the cylinder pressure the process was set up for, while the built-in check valve helps keep the set pressure downstream if the main supply dips.
On a packaging or bottling line, the regulator supplies the diverters, lifters and gripper cylinders at a consistent pressure so sequencing valves and cylinders repeat their strokes the same way each cycle.
Start with the size and port: 200, 300, 400 and 600 step up in both port size and flow capacity, so pick the step that matches your line's air demand and pipe diameter - here that is size 400 with 1/2 in NPT threads (PT is the standard thread; G/BSPP and NPT are orderable options). Choose the gauge scale you want to read - MPa, psi or bar - and whether you prefer the embedded square gauge or the external round gauge fitted on this unit. Decide if you need the reverse/check valve (fitted here, code K) to hold downstream pressure if the supply drops, and whether you want the bracket (included on this code) or panel mounting. If your working pressure never exceeds 0.4 MPa, the GR low-pressure type (code L) is available. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes regulator flow as curves, not as a single rated number, so we do not quote a figure here. Tell us your inlet pressure, set pressure and the air demand of your equipment, and we will confirm the flow and datasheet figures for this 400-size, 1/2 in unit on request before you order.
K means a reverse (check) valve is fitted, which helps hold the downstream setting if the upstream supply falls. The C3 in the code means an external round gauge with a bar scale is included. The trailing T means 1/2 in NPT threads; PT is the standard thread for the GR series, with G (BSPP) and NPT available as order options.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.